Slip-socket.



P. C. SPEER.

SLIP SOCKET. APPLICATION FILED NOV.15,1909. 991,176. Patented May2,1911.

FIG.1. Fxaha. F "4' I" I I I \Ill HIM I 1' MI II I FIG-3 1| II'HI I 12 II1" f H 2W W 2 Q 14 1m if i 16 m 2 W /0 W 10 16 6 16 l 17 17 17-?" 2 5 4"4 I &9 11 za i 15 A5 6? 111 g 13 WITNESSE:

HIS ATTORNEY hm-nnluus wuumcrun. n. c.

PRESTON C. SPEER, OF HOVEY TOWNSHIP, ARMSTRONG COUNTY, PENNSYLVANIA.

SLIP-SOCKET.

Application filed November 15, 1909.

Specification of Letters Patent.

Patented May 2, 1911.

Serial No. 528,054.

To all whom it may concern:

Be it known that I, PRESTON C. Srnnn, a citizen of the United States,and residing in the township of .llovey, in the county of Arn'istrongand State of Pennsylvania,have invented or discovered new and usefullinn'ovements in Slip-Sockets, of which the following is aspecification.

My invention consists in certain new and useful lITlPIOYGlIltDtS in slipsockets used in fishing for tools stuck in oil, gas or Artesian wells.\Vhen the drill or other tool becomes broken from the string, it must beremoved or the well abandoned as a plugged hole. To obtain a grip on thestuck tool a. slip socket is lowered into the hole over the end of thetool which is seized thereby by means of the slip carried by the socket.The jars are then operated to exert an upwardly jarring motion on thesocket and the result is usually the dislodgment of the tool and itsremoval from the well. Sometimes, however, this operation is notsuccessful, and it is then desirable to disengage the socket from thetool so that the former may be withdrawn. Frequently the socket cannotbe readily disengaged from the tool and a jarring motion is resorted towhich frequently results in fracturing the socket and leaving a portionof the same or its slips in the well. The socket is then worthlessunless the damage can be repaired. As slip sockets are expensive, thisresults in great cost.

My invention consists in providing the socket with means which, by theexertion of a downward jar on the socket, release the' slips from theirengagement. with the tool and hold them in their inoperative positionwhile the socket is being withdrawn. The socket may thus be releasedfrom the tool and withdrawn from the well without injury and cantherefore be used over and over again without the need of repairs.

In the accompanying drawings, Figure l is a side elevation showing theslip socket engaging a stuck tool, the means for holding the slips intheir inoperative position being shown inoperative and the socket bowlbeing shown broken away for the sake of clearness; Fig. 2 is a similarview showing the slips held in their inoperative position, while Fig. 3is a side elevation ona large scale, taken at right angles to the otherfigures,

showing the bowl and also showing the slips in their ino )erativeposition.

The following is a detailed description of the drawings.

1 is a tool supposed to be stuck in a well, and 2 is the head of thesocket by which the socket is suspended from the string.

3 is the cylindrical bowl, secured to, or integral with, and dependingfrom the head 2.

-fl 'lare the slips mounted in bowl 3 on block 5 which is slidablyn'iounted in said bowl by means of a pin 6 passing through alongitudinal slot 7 in said block and having its ends secured in thewall of said bowl. The block 5 is preferably made in two parts for easeof assembling in the bowl, said parts being secured together by anyconvenient means, not shown.

8 is a coiled spring interposed between block and the head 2 to normallyhold the slips -ill in their lowest position, and 9 is a second springsecured to block 5 so as to be interposed between said block and the endof tool 1 when the socket is in use, thus tending to throw the slipsupward when they are released. These springs also aid in softening theblows.

1010 are shoulders on the upper ends of slips t4i adapted to be engagedby the releasing means to be described. The lower ends of slips 44 areprovided with downwardly and outwardly tapered inner faces which areprovided with gripping teeth 1111 adapted to securely grip the end oftool 1.

12-42 are the jars interposed in the string, preferably just above thesocket so that an upward or downward jar may be exerted on the tool asdesired.

The lower portion of bowl 3 is preferably of less inner diameter thanthe remainder thereof, as at 13, the lower edge thereof be ingpreferably beveled as at 3 so as to pass easily over the end of tool 1and in said portion 13 are a pair of beveled slip seats 13 13 in whichthe slips 44 seat when in their operative position, as shown in Fig. 1,the upper portion of their toothed faces extending out from said seatsto firmly grip the tool 1.

In the socket I provide two vertical slots 1 1-14E extending downwardlyfrom the top of the bowl in which are-seated the spring fingers 15-15provided with inwardly extending hooked ends 1(51(' having their lowerfaces beveled, which engage the shoulders 1010 of slips 4-1 and holdsaid slips in their inoperative position.

The sides of the bowl 3 are cut away as at 17l7 to provide for access tothe mechanism contained in the bowl and to assist in assembling theparts.

The operation of the device is as follows: The socket is lowered downthe well until the socket telescopes down over the end of tool 1, and,owing to the action of spring 8, the slips seated in seats 13"13 engagethe end of said tool. An upward jarring motion is now applied to thesocket, thus drawing the bowl 8 upwardly as relates to the slips 4:4;thus, by the beveled shape of seats E -l3, forcing the slips 4t4 intosnug contact with the tool. This jarring action is continued until thetool 1 is loosened or it is discovered that the tool cannot be loosenedin this way. Sometimes a single downward jar will loosen the socket fromtool but fre quently, unless my releasing means are provided, it isnecessary to jar the socket until it gives away by breaking or the slipsare worn out or torn oft before the socket can be released, usuallyleaving a portion of the socket in the well and sometimes producing aplugged hole or, in other words, a well that must be abandoned. This isobviated by the use of my improved releasing means. hen it is desired torelease the socket from the tool, in the use of my improved socket, Iexert a downward jar on the socket thus forcing the head 2 and bowl 3downwardly against the spring 8, the block 5 and the slips 4E4e mountedthereon remaining in their first position. This movement of the bowl 3moves the seats 13 13" below the ends of slips l4c removing the wedgingaction which forces the slips against the tool 1. The spring fingers1515, descending with the bowl and head, snap over the shoulders 10 10of slips 44 with their hooked ends 1616, holding the slips 4-4: in theirelevated, inoperative position within bowl 3 and permitting the socketto be drawn up out of the well. To set the socket again for use, thespring fingers are disengaged from the slips thus permitting the spring8 to throw the block 5 and the slips 44; down into their normalposition.

It is evident that my improved socket may be readily removed from thewell without injury so that it can be used repeatedly without repairs.The additional cost of my improved socket, over the old form is trivialwhile the saving is very substantial.

Although, for the sake of clearness, I have minutely described theembodiment of my nvention shown in the drawings, I do not wish to limitmyself thereby but claim broadly 1. In a slip socket, the combination ofa bowl, a longitudinally slotted block slidably mounted in said bowl, apin passing through the slot in said block and secured to the Walls ofsaid bowl, a pair of slips mounted on said block and adapted to beforced into engagement with the end of the tool by means of an upwardjar and to be disengaged therefrom by a downward jar, and dependingfingers mounted on said socket and adapted to be forced down intoengagement withsaid slips by a downward jar to hold them in theirinoperative position, substantially as described.

2. In a slip socket, the combination of a bowl, a longitudinally slottedblock slidably mounted in said bowl, a pin passing through the slot insaid block and secured to the walls of said bowl, a pair of slipsmounted on said block and adapted to be clamped into engagement with thetool by an upward and to be released therefrom by a downward jar, anddepending fingers mounted on the socket and adapted to be forced downinto engagement with said slips by a downward jar to hold the same intheir inoperative position, substantially as described.

3. In a slip socket, the combination of a bowl, a two-part blockprovided with a longitudinal slot slidably mounted in said bowl,

a pin passing through the slot in said block and secured to the walls ofsaid bowl, a pair of slips mounted on said block and adapted to beclamped into ei'lgagement with the tool by an upward jar and to bereleased therefrom by a downward jar, and depending fingers mounted onsaid socket and adapted to be forced down over the exterior of saidslips into engagement therewith by a downward jar to hold them in theirinoperative position, substantially as described.

Signed at Pittsburg, Pa., this 12th day of November, 1909.

PRESTON c; srnnn.

Witnesses ADAH M. MANN, EDWARD A. LAWRENCE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, I). G.

